The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 10, 2015
Filed:
Aug. 13, 2013
Applicant:
Caterpillar Inc., Peoria, IL (US);
Inventor:
Timur Aliyev, Chicago, IL (US);
Assignee:
Caterpillar Inc., Peoria, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/00 (2006.01); F01N 3/20 (2006.01); F02D 41/02 (2006.01); F02D 41/14 (2006.01); F01N 3/021 (2006.01);
U.S. Cl.
CPC ...
F01N 3/208 (2013.01); F02D 41/0275 (2013.01); F02D 41/1463 (2013.01); F01N 3/021 (2013.01); F01N 2560/021 (2013.01); F01N 2560/026 (2013.01); F01N 2610/02 (2013.01); F01N 2900/08 (2013.01); F01N 2900/1402 (2013.01); F01N 2900/1404 (2013.01); F01N 2900/1411 (2013.01); F01N 2900/1621 (2013.01); F01N 2900/1622 (2013.01); F02D 2250/36 (2013.01);
Abstract
A method of controlling an aftertreatment system having a SCR catalyst and communicating with an engine electronic control module (ECM) is provided. The method may receive a plurality of system values corresponding to NHand NOemissions of the aftertreatment system; determine an optimal urea dosing target value based on the system values and one of a target NHstorage value and an estimated NHstorage value; and determine an optimal engine NOoutput target value based on the system values and a measured NOconversion efficiency value.